Visualization of Diffusive Hydrogen

Abstract:

In recent years, the use of hydrogen as a clean energy has been paid attention to in terms of the prevention of global warming. Tanks composed solely of steel and cylinders consisting of aluminum liner reinforced with C-FRP in the surrounding are used to store high-pressure hydrogen gas in hydrogen stations and in fuel cell vehicles, respectively. On the other hand, hydrogen embrittlement has been known to occur in some metallic materials under several certain conditions. Also, it has been generally known that the environmental hydrogen that invades the material during services plays major role in hydrogen embrittlement. For this reason, investigations on the behavior of environmental hydrogen in metallic materials are needed. In this study, the behavior of environmental hydrogen in pure aluminum, 6061 aluminum alloy and 7075 aluminum alloy has been investigated by means of tritium autoradiography.

• Periodical: Materials Science Forum (Volumes 654-656)
• Pages: 2903-2906
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.654-656.2903
• Online since: June 2010
• Authors: Takahito Watakabe, Goroh Itoh, Yuji Hatano
• Keywords: 7075 Aluminum Alloy, AA6061 Aluminum Alloy, Environmental Hydrogen, Hydrogen Embrittlement, Pure Aluminum, Tritium Autoradiography

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